> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Category Object (ICategory Interface)

> Category object (ICategory interface) in the ABBYY FineReader Engine API — a set of classification objects that belong to the same category, used as part of the training data.

This object is a set of classification objects belonging to the same category. Several Category objects can represent the complete set of data for training the classifier.

## Properties

| Name    | Type                                                                                                                                                                                                                                              | Description                                           |
| ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------- |
| Label   | [BSTR](/fine-reader/engine/guided-tour/advanced-techniques/programming-aspects/working-with-properties)                                                                                                                                           | The category label.                                   |
| Objects | [ClassificationObjects](/fine-reader/engine/api-reference/classification-related-objects/classificationobjects), [read-only](/fine-reader/engine/guided-tour/advanced-techniques/programming-aspects/working-with-properties#readonly_properties) | The classification objects belonging to the category. |

## Related objects

<img src="https://mintcdn.com/abbyy/6udH-pkk8zkVafYH/images/fine-reader/engine/category.gif?s=d9c10027c45201ad93866594447d2f1a" alt="Category" width="193" height="167" data-path="images/fine-reader/engine/category.gif" />[](/fine-reader/engine/api-reference/classification-related-objects/trainingdata#categories)[](/fine-reader/engine/api-reference/classification-related-objects/classificationobject)[](/fine-reader/engine/visual-components-reference/supplementary-objects/spellwordcollection/element-property)[](/fine-reader/engine/api-reference/classification-related-objects/classificationobjects)[](/fine-reader/engine/visual-components-reference/supplementary-objects/spellwordcollection/element-property)[](/fine-reader/engine/api-reference/classification-related-objects/trainingdata)[](/fine-reader/engine/api-reference/classification-related-objects/categories)

[Object Diagram](/fine-reader/engine/api-reference/object-diagram)

## Output parameter

This object is the output parameter of the [AddNew](/fine-reader/engine/api-reference/classification-related-objects/categories/addnew-method), [Find](/fine-reader/engine/api-reference/classification-related-objects/categories/find-method), [Item](/fine-reader/engine/visual-components-reference/supplementary-objects/spellwordcollection/item-method) methods of the [Categories](/fine-reader/engine/api-reference/classification-related-objects/categories) object.

## Samples

This object is used in the [Classification](/fine-reader/engine/guided-tour/samples#classification) demo tool in Windows and the [Classification](/fine-reader/engine/guided-tour/samples#classification_unix) code sample in Linux and macOS.

## See also

[Categories](/fine-reader/engine/api-reference/classification-related-objects/categories)<br />[Document Classification](/fine-reader/engine/guided-tour/basic-usage-scenarios-implementation/document-classification)